2021RNAAS...5..203M

Query : 2021RNAAS...5..203M

2021RNAAS...5..203M - Research Notes of the AAS, 5, 203 (2021/September-0)

The Mean Overabundance of Manganese over the Surface of 21 Com from its Midultraviolet Spectra Recorded by IUE.

MONIER R.

Abstract (from CDS):

The coaddition of 21 mid ultraviolet spectra of 21 Com taken over the International Ultraviolet Explorer (IUE) mission reveals three strong lines of Mn II at 2576.10, 2593.72 and 2605.68 Å. The synthesis of these lines consistently yields a sizable overabundance of manganese about 10 times the solar manganese abundance. Inspection of the 10 individual spectra taken over the 24 hr monitoring of 21 Com with IUE on 1991 April 17 does not reveal convincing variations of these lines between rotational phases 0.18 and 0.65 of the 2 days period.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Chemically peculiar stars - Chemical abundances

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 * 21 Com a2* 12 31 00.5605002264 +24 34 01.797245328   5.496 5.436     A2pv 295 0

Query : 2021RNAAS...5..203M

Basic data :
* 21 Com -- alpha2 CVn Variable
Other object types: otypes_help 		* (2022ApJS,*,...), UV (FAUST,TD1), a2* (2017ARep), dS* (2017ARep), SB* (SBC9), V* (V*), NIR (2MASS)
ICRS coord. (ep=J2000) : 		12 31 00.5605002264 +24 34 01.797245328 (Optical) [ 0.0816 0.1026 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		12 28 30.8290680867 +24 50 35.897922561 [ 0.0816 0.1026 90 ]
Gal coord. (ep=J2000) : 		240.9269094580673 +84.7392398204867 [ 0.0816 0.1026 90 ]
Proper motions mas/yr : 		-12.474 -9.085 [0.082 0.128 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 0.1 [0.9] / z(~) 0.000000 [0.000003] / cz 0.10 [0.90]
   A 1979IAUS...30...57E
Parallaxes (mas): 		12.0785 [0.1214] A 2020yCat.1350....0G
Spectral type: 		A2pv C ~
Fluxes (6) :
B 5.496 [0.014] D 2000A&A...355L..27H
V 5.436 [0.009] D 2000A&A...355L..27H
G 5.430502 [0.002899] C 2020yCat.1350....0G
J 5.293 [0.037] C 2003yCat.2246....0C
H 5.308 [0.027] C 2003yCat.2246....0C
K 5.269 [0.017] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 536 Display criteria :

Identifiers (39) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* 21 Com GCRV 7530 PPM 101953 UBV M 41719
AG+24 1312 GEN# +5.21110160 Renson 31610 uvby98 521110160
BD+25 2517 GSC 01989-03213 ROT 3940 V* UU Com
Cl* Melotte 111 AV 1973 HD 108945 SAO 82346 WEB 10871
Cl* Melotte 111 BOU 35 HGAM 617 SBC9 1927 YPAC 514
Cl Melotte 111 160 HIC 61071 SKY# 23400 YZ 24 6145
Cl Melotte 111 1604 HIP 61071 TD1 16320 [SS59] I 294
FAUST 3194 HR 4766 TIC 393819751 Gaia DR2 3959965486205062528
FAUST NGP-2 JP11 5077 TYC 1989-3213-1 Gaia DR3 3959965486205062528
GC 17056 2MASS J12310056+2434018 UBV 11245

References (295 between 1850 and 2026) (Total 295)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 10    Diameter : 1    Distance : 4    Rot : 7    Fe/H : 5    Plx : 5    PM : 4    SpT : 10   

   

Observing logs
IUE : 99   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Link by name to the catalogue in VizieR :

AG+24 1312 BD+25 2517 FAUST 3194 FAUST NGP-2 GSC 01989-03213
HD 108945 HIC 61071 HIP 61071 HR 4766 2MASS J12310056+2434018
PPM 101953 SAO 82346 TD1 16320 TYC 1989-3213-1 uvby98 521110160
V* UU Com Gaia DR2 3959965486205062528 Gaia DR3 3959965486205062528

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